Nissan Testing Energy Supply & Demand Management With LEAF & LEAF-To-Home

OCT 31 2014 BY MARK KANE 9

A 2013 Nissan LEAF Demonstrates A Little V2G This Summer

A 2013 Nissan LEAF Demonstrates A Little V2G This Summer

Nissan is participating in the “demand response” energy supply and demand system project, in which together with businesses and government authorities in Japan, the automaker will test the potential of electric vehicles in energy management systems.

In the case of Nissan and its LEAF electric car, there is an option to power external systems with “LEAF to Home” (via CHAdeMO) up to 6 kW.

This particular project will be focused on helping power grids cope with peaks in demand, but it could help to stabilize electricity supply from renewable sources.

Like net metering, V2G system are a step forward and the utility typically pays for reducing demand (renting your batteries).

“The tests are being conducted by ENERES Co., Ltd.. Nissan is using Nissan LEAF EVs paired with the LEAF to Home power supply system for demand response testing at several of its sales outlets run by subsidiary Kanagawa Nissan Co., Ltd. to assess the effectiveness of EV batteries when used for energy management.”

“Demand response is a strategy to make power grids more efficient by modifying consumers’ power consumption in consideration of available energy supply. Since the Great East Japan Earthquake in March 2011 the supply and demand of electricity during peak use hours in Japan has drawn attention. Under the demand response scheme, power companies request aggregators* to use energy conservation measures, and they are compensated for the electricity that they save.”

“Usually when energy-saving is requested consumers may respond by moderating their use of air conditioning and lighting. However, by using the storage capacity of electric vehicles and Vehicle to Home (V2H) systems, consumers can reduce their use of power at peak times without turning off lights and appliances. This is particularly useful in commercial establishments where it is difficult to turn power off to save electricity.”

“The demand response scheme involves assessing the usefulness of energy-saving measures using V2H systems during peak-use periods and analyzing the impact of monetary incentives on business. For example, the testing involves a LEAF and LEAF to Home system which is connected to power a Nissan dealer’s lighting system during regular business hours using stored battery energy. This reduces electricity demand on the power grid. The aggregator is then compensated for the equivalent of the total amount of electricity that is saved. Two or three tests per month will be conducted on designated days for three hours’ each time sometime between 8:00 a.m. to 8:00 p.m. from October 2014 through January 2015.”

* Aggregators refers to businesses that coordinate two or more consumers (e.g. plants and offices) and trade with utility companies the total amount of the electricity they have succeeded in curbing.”

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9 Comments on "Nissan Testing Energy Supply & Demand Management With LEAF & LEAF-To-Home"

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Traction batteries and Grid Storage batteries neither have the same requirements nor the same specs: Vehicle batteries must deal with the rigors of constant charging and discharging and spikes of power demands. These batteries must also be high density to fit the limited space of vehicles.

Grid batteries are buffers and charge and discharge fairly slowly; but, many many times to keep power flow smooth. Space is not as critical a factor.

All batteries have a useful life. I question if I would want to use up my expensive traction battery for this application.

The reason this system is effective is that it charges and discharges at a really slow rate for a battery of that size. 6 kW is 0.25 C which is nothing for the battery in the leaf. They typically also only use a small fraction of the battery these trials especially for balancing where the battery maybe operating in 1 to 30 min bursts. All of this has a negligible effect on battery life. The reason this is a study not a realiety is because they are trying to work out how to use a little bit of everyone’s battery in a cost effective way. Bi-directional inverters are not cheap so how do you pay off that capital?

I’m not convinced you can recover the costs. Did I misread the article or was there no mention as to the cost of the “V2H Box”. My electric company does NOT offer net metering or time of day billing so fat chance I’m going to let somebody drain my battery down and then charge it back up later. I’ll pass.

I love it.
Where can I buy one?

If you have a Volt you have a generator with 10 gal of gas capacity in an emergency.

+1 Mr. Kane

+1 GeorgeS

Hi George!

Here is our friend Mr. Energy Czar with a simple video Of #V2G ( Vehicle To Grid ) Home Power with His Chevy Volt Extended Range Electric Vehicle!

Link Goes To YouTube Video-

p.s. Last December after 3 day of power failure, following Czars advice bought the high output inverter. Came home, was wiring it in and the power restored! lol


Thomas J. Thias


I don’t know how I feel about this either. But I would be more than happy to sign up for a more traditional demand response function. That is, if supply/demand because unbalanced, I am generally ok with allowing the grid to stop my car from charging. Provided of course there is a way to override when needed.

Dr. Kenneth Noisewater

This would be GREAT with a Tesla, heck, power the house with solar during the day and with the car during the night, and Supercharge.. Perhaps have a smallish buffer battery (say 10kWh) and do a ‘bucket brigade’ between Supercharger and home 😉

more utopia:

can a wireless charging plate go both ways?

If so, wireless charge everywhere via plates in pavement at homes and shopping centers, same plates can provide V2G for load balancing.